Apparatus for making cores.



' No. 743,121. PATENTBD n0v.,a, 19o,a.

w. WEAVER A APPARATUS FOR MAKING cons.

APPLIOATION nun 001223 1902.

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PATENTED NOV. 3, 1903.

W. WEAVER. APPARATUS FORMAKING GORES; APPLICATION FILED 0OT.23. 1902 N0MODEL.

[zzvealor No. 743,121. PATENTED NOV. 3, 1903.

W. WEAVER.

APPARATUS FOR MAKING GORES.

APPLICATION FILED 0612a. 1902. V y

no MODEL. 4 SHEETS-SHEET 4.

lllllllllllllllllulnlllll fzwezzl'arz lh'Z/iamiI/eaven UNITEE STATES Iatented November 3, 1903 PATENT OFFICE.

WILLIAM WEAVER, or CHICAGO, ILLIN IS, ASSIGNOR TO MCCORD & COM- PANY, OFCHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

APPARATUS FOR MAKING ooREs SIPECIFIC'ATION forming part of LettersPatent No. 743,121, dated November 3, 1963.

Application filed October 23, 1902. Serial No. 128.384. (No model.

To all whom it may concern:

Be it known that 1, WILLIAM WEAVER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Apparatus for MakingCores,

of which the following is a full, clear, concise, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

My invention relates to apparatus for making cores, and especially toapparatus for making cores used in casting journal-boxes forrailway-cars.

Prominent objects of the invention are to provide an apparatus whichwill permit the simplification of the method of making cores and thereduction of the expense and time required in making the same; toarrange for securing absolute accuracy, uniformity, and symmetry in thefinished core; to provide a simple, practical, and effective apparatusfor this purpose, and'to accomplish the above results in a practical andefficient' manner,

In making cores as herein set forth the core is made in a single pieceinstead of in two or more separable parts, as has been and is nowcommon. By making the core of a single piece it is practicallyperfect-that is, it is uniform and symmetrical throughoutwhereas whenmade in a plurality of pieces there is great liability of the differentpieces being more or less out of register with one another when securedtogether, with the result that the finished core is imperfect andunsymmetrical.

In making the core in a single piece in accordance with the manner ofcarrying .out my invention herein set forth I provide a hollow structureor box whose interior has the shape or conformation which it is desiredthe core shall have. This hollow structure or box is made of separableparts which can be readily associated together to make the complete boxand easily separated. It also has an open top or other large opening.The core is made by first associating the separable parts of the hollowstructure and then filling the same with sand through the open top orother opening and then pounding or compressing the sand in the usual wayin molding processes. The core is thus formed inside of the hollowstructure. The separable parts of such structure are then separated andremoved, leaving the complete core in a single piece. The separableportions of the hollow structure or box are conveniently provided withlooking devices by which they can be locked together after beingproperly associated to make the complete box. I also provide wherenecessary removable parts or slides for the box by which differentshapes or configurations can be imparted to the core asre= quired in thevarious individual instances.

In the accompanying drawings I have illustrated a core box and core madetherein adapted for the casting of car-axle boxes for railway-cars andthe like. It will be understood, however, that I do not wish to confinemyself to this particular form of core-box, as it is obvious that theinvention can be applied to other forms or species of cores with equalfacility.

In the accompanying drawings, Figure l is a perspective view of acore-box for making cores for car-axle boxes in accordance with myinvention with certain slides partially removed. Figs. 2 and 3 arerespectively a plan and side elevation of the box. Fig. i is alongitudinal section taken on line 4 4 in Fig. 2. Fig. 5 is an endelevation. Figs. 6, 7, 8, 9, 10, and 11 are views of different removableparts of the box. 12 is a side ele- V vation, on a smaller scale, of acore-box with a supplemental core arranged upon it. Figs. 13, 14:, and15 are respectively a side elevation, a plan view, and end elevation ofthe finished core.

In the drawings I have shown a core-box A adapted to form the core for acar-axle box. To such end its interior has the general configuration thecore must have. This box A consists of two separable parts or sections 11, each of which is desirably a longitudinalhalf of the box made bydividing the same along a central vertical plane. The box is made withan open top and bottom, so that each section or half really comprisesonly a side wall and the halves of the end walls. These halves areintended to be readily fitted together and to be easily separated fromone another, so that at will they can be formed into a completestructure or divided into the component parts thereof. To such end thesections or halves are provided with dowelpins 2 2, Fig. 4, and sockets3 3, adapted to receive saidpins. In order to hold the two halves orsections firmly and securely together when desired, the same areprovided with clamping or looking devices, a convenient arrangementbeing to provide the ends of the sections or halveswith plates 4 4,having inclined lugs 5 5, and to provide clamps 6 6, adapted to fit overthe lugs 5 5. By driving the clamps 6 6 upon the plates 4 4 the twosections or halves 1 1 can be held very securely together.

The halves or sections 1 l are made with inwardly-extending projections7 7 and inclined surfaces 8 8, which are respectively opposite oneanother in the two halves. The sides 1 1 are also provided with notchesor recesses 9 9 and 10 10. The opposite end portions 11 11 of the sides1 1 are made higher than the intermediate portion. The inner surfaces 1313 of the ends are desirably in- The end surfaces 14 14 clinedoutwardly. are desirably inclined so as to flare upwardly.

The sides 1 1 are provided with interior vertically-arranged guideways15 16 and crossrecesses 17 17 18 18, and vertically-movable slides 1920, having lateral projections 21 21 22 22, are adapted to fit and slidein the guideways 15 16 and to have their projections 21 21 22 22 fit inthe transverse recesses 17 17 18 18. The sides 1 1 are also providedwith slots or apertures 23 23, and into these slides 24 24 are adaptedto fit and move. The slides 24 24 are desirably provided with lateralprojections 25 25, adapted to strike against the sides of the box andlimit inward move The slots 23 23 are in alinementwith ment. theguideways 16 16, whereby the slides 20 20 and 24 24 are in alinementwith one another and in effect form a single piece when all said slidesare inserted. The slides 19 and 20 are made arch-shaped, the curvedportions 26 26 of the arch being circular. The slides 24 24 are madewith concave circular surfaces 27 27, so that when the slide 20 and theslides 24 24 are in position all three together provide a circularopening.

The core-box A is also provided with triangular apertures or openings 2828, adapted to receive a triangular slide or rod 29. The rear face ofthe rod 29 coincides with the edges 8 8, which mark the terminations of'inclined portions 8 8 of the interior wall of bracket 32 has a concavetop or seat 35, Figs..

4 and 5, which meets and forms continuations of the flaring sides 14 14of the box and of the arched edge 26 of the slide 19.

A bracket B is adapted for arrangement upon the top of the box adjacentto the elevated portions 11 11 of the box sides, as shown in Figs. 2 and3. This bracket B is composed of two parts 36 and 37, Figs. 1, 8, 9, 10,and 11,whereof the part 36 is arranged adjacent to the elevated portions11 11 and the part 37 adjacent to the part 36. The part 36 isconstructed with straight edges 38 38, adapted to fit against the edgesof the portions 11 11, and also with a projecting portion 39, adapted tofit between said portions 11 11, and so prevent movement of the part 36relatively to the box. Lugs 40 40 project rearwardly from the portion39. The front edge 41 of the part 36 is inclined downwardly andforwardly, as shown in Figs. 1 and The part 37 has downwardly-projectinglugs 42 42 43 43, whereof the lugs 42 42 are adapted to fit into thenotches or recesses 10 10 on the opposite sides of the box, and the lugs43 43 are adapted to project downwardly into the interior of the box.The rear face 44 of the part 37 is inclined upwardly and rearwardly tocorrespond with the front face of the part 36, whereby the part 37 whenplaced upon the top of the box and locked in position by having its lugs42 42 enter the notches 10 10 will also look the front end of the part36. Thus the bracket B, composed of the parts 36 and 37, can be firmlyand securely held in position.

In Fig. 12 is shown the box A, with the usual core 0 for making the lugfor the dustguard applied to it. To such end the box A is provided witha bracket 46, having depending lugs or projections 47 47, adapted to fitinto the notches 9 9 in the sides of the box A, so as to hold saidbracket firmly in position at the proper place. The inclined wall 48 ofthe bracket 46 has the same inclination as the rear surface of the core0, whereby the core C when placed in position can be moved against thebracket 46 and there held.

In making the core by means of the arrangement hereinbefore set forth Iproceed as follows: The two sides 1 1 of the core-box are placedtogether and securely locked against separation by the clamps 6 6. Thebox is then placed upon the fallow-plate 30, and the brackets 31 and 32are put in position within the box, so as to rest upon the plate 30. Theslides 24 24 and 29 are then placed in position and sand or core mixtureis introduced into the box and packed with the hands so as to fill allthe corners. The usual rods to support the cores are then placed inposition, and the sand is then packed with a rammer, the box beingpartially filled. The slides 19 and 20 are then placed in position, andthe box is filled with the sand and packed tight and the top smoothedoff with a straight edge. The bracket 13 is then placed in position anddriven downwardly until the lugs 43 43 and 40 4O embed themselves in thesand, and the bracket rests upon the top edges ofthe box. The bracket 46is then placed in position and the lug C is set upon the top of the boxagainst the bracket 46. This forms the core complete. By referring toFigs. 13, 14, and 15, showing the complete core D, the effect of thecore-box and its removable parts can be seen. The sides of the core-boxform the side walls 50 of the core, the projections '7 7 on the core-boxwalls forming the indentations or recesses 51 51 in the core. Theinclined portions 8 8 of the core-box form the inclinedwalls 52 52 ofthe core. The inclined or bulging end surfaces 13 13 of the core-boxform the inclined or wedge-like ends 53 53 of the core. form the flaringsurfaces 54 54, the brackets 31 32 the lower walls 56, respectively, theslide 19 the recess 57, providing the top of the rear face of thedust-guard slot, the slides 20 and 24 24 the recess 58, which providesthe inner dust-guard wall, and the triangular rod 29 the recess59,'which provides the lip on the box. The bracket B, with its lugs 4343, forms the recesses 60 for the Wedge-lugs. The supplemental core 0forms the lug. After the core is completed the box and its various partsare separated and removed, so as to leave the core standing; The topbrackets B and 46 are removed, then the slides 19, 20,

29, and 24 24, and then the clamps 5 6 are removed and the halves 1 1 ofthe box withdrawn. The core is thus left upon the bottom plate 30 andthe brackets 31 and 32. In this condition it is baked, if desired.

The apparatus can be used for making green sand cores-that is, coreswhich do not require baking. In such case a special iron arbor isprovided to support the sand, the arbor being inserted in the core-boxand then the slides and brackets put in place, as before. WVhen the coreis completed, it can be placed directly into the mold, which is then incondition to receive the hot metal.

It will be seen from the foregoing that by employing my invention thecore is made in a single piece and is therefore perfect, incontradistinction to a core made of two or more pieces pasted together,with the usual result due to the fact that the various core-makingelements-that is, the box, slides, brackets, &c.must necessarily be putin the proper places and cannot be varied or changed from their properlocations. This also insures every core being exactly alike.

It will be understood that I do not wish to confine myself to the exactapparatus herein set forth, Departures can be made from it withoutdeparting from the spirit of my in- Sim'ilarly the flaring walls 14 14'vention. The apparatus herein shown for making journal-box cores can bevaried and changed and the entire invention can be applied for makingentirelydifferent kinds or forms of cores.

What I do claim as my invention, and desire to secure by Letters Patent,is

1. An apparatus of the class specified, comprising a box having an opentop and having itsends split vertically so as to permit horizontalseparation of the sides of the box, the interior of the box being formedto give the core the desired configuration, and means for clamping theseparable sides of the box temporarily together, substantially asdescribed.

2. An apparatus of the class specified, comprising a box having an opentop and having its ends split vertically and having its interior formedto produce the core configuration, clamping devices for clamping thesplit ends of the box temporarily together, and coremodifying devicesdetachably secured to the box, substantially as described.

3. In apparatus for making journal-boxcores, the combination with ahollow structure or box having its interior formed to produce theconfiguration of the core, of a bracket 31 for forming the lower surfaceof one end of the core, and a pin 29 arranged to fit in apertures formedin the sides of the box above the bracket 31, substantially asdescribed.

4. In apparatus for making journal-box cores, the combination with aboxhaving its interior formed to produce the core configuration, of asupplemental core 0 situated upon the top of the box, and means forholding said core in position on the box, substantially as described. i

5. In apparatus for making journalbox cores, the combination of a boxhaving its interior formed to produce the core configuration, of abracket 46 adapted to be detachably secured to the top of the box, and asupplemental core C resting upon the box against the bracket 46,substantially as described.

6. An apparatus for making journahbox cores, comprising a box open atits top and bottom and having its ends split vertically so as to permithorizontal separation of the sides I of the box, means for clamping thesides of the box temporarily together, brackets adapted for arrangementat the bottom of the box to form the upwardly-extending lower endsurfaces of the core, and devices for forming the other modifications ofthe core, adapted to be detachably secured to the box, substantially asdescribed.

7. A coremaking apparatus, comprising a box having an open top andbottom and made in separable parts, clamping devices for temporarilyholding the ends of the box together, the said box being provided withinterior guideways 15 and 16 and also with slots 23, 23, and apertures28, 28, and its sides being constructed with notches 9, 9 and 10, 10,slides 19 and 20 adapted to work in the guideways 15 and 16, slides 24,24, adapted to work in the slots 23, 23, said slides 24, 24, beingprovided with means for limiting their inward movement, a rod 29 adaptedto fit into the apertures 28, 2 8, and brackets or supports 31, 32adapted to fit within the box at the ends thereof.

8. A core-making apparatus comprising a box having an open top andbottom and made in separable parts, clamping devices for temporarilyholding the ends of the box together, the said box being provided withinterior guideways 15 and 16 and also with slots 23, 23 and apertures28, 28, slides 19 and 20 adapted to work in the guideways 15 and 16,slides 24, 24, adapted to work in the slots 23, 23, said slides 24, 24,being provided with means for limiting their inward movement, a rod 29adapted to fit into the apertures 28, 28; brackets or supports 31,adapted to fit within the box at the ends thereof, abracket B consistingof parts 36 and 37, the former of which is provided with a projectingportion 39, and lugs 40, 40, and the latter of which is provided withlugs 42, 42 and 43, 43, whereof the former are adapted to fit into theslots 10, 10, and a bracket 46 having lugs 47 adapted to fit in thenotches 9, 9, substantially as described.

In Witness-whereof I hereunto subscribe my name this 13th day ofOctober, A. D. 1902.

WILLIAM \VEAVER. \Vitnesses:

I JOHN B. LEE,

EDWARD DENEGR'E.

